我是新的android,我想通过android编程保存sdcard中的gif图像.目前我已经从谷歌做了一些代码来保存SD卡中的gif图像.但是当我将该图像保存到SD卡时,它将显示正常图像而不是gif图像.
//Save code
save.setonClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Bitmap image = BitmapFactory.decodeResource(getResources(),
R.drawable.gpp3);
File outputFile = new File("/sdcard/gpp3.gif");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(outputFile);
} catch (FileNotFoundException e) {
e.printstacktrace();
}
if (fos != null) {
AnimatedGifEncoder gifEncoder = new AnimatedGifEncoder();
gifEncoder.start(fos);
gifEncoder.addFrame(image);
gifEncoder.finish();
}
}
});
那么,上面的代码有什么问题.请告诉我.
解决方法:
我不确定,但根据您的要求,您应首先打开您的GIF,然后在转换为字节数组后再保存它.我希望您能得到您的解决方案
private void saveGIF()
{
try
{
File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), "shared_gif_shai" + System.currentTimeMillis() + ".gif");
long startTime = System.currentTimeMillis();
Log.d(TAG, "on do in background, url open connection");
InputStream is = getResources().openRawResource(R.drawable.g);
Log.d(TAG, "on do in background, url get input stream");
BufferedInputStream bis = new BufferedInputStream(is);
Log.d(TAG, "on do in background, create buffered input stream");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Log.d(TAG, "on do in background, create buffered array output stream");
byte[] img = new byte[1024];
int current = 0;
Log.d(TAG, "on do in background, write byte to baos");
while ((current = bis.read()) != -1) {
baos.write(current);
}
Log.d(TAG, "on do in background, done write");
Log.d(TAG, "on do in background, create fos");
FileOutputStream fos = new FileOutputStream(file);
fos.write(baos.toByteArray());
Log.d(TAG, "on do in background, write to fos");
fos.flush();
fos.close();
is.close();
Log.d(TAG, "on do in background, done write to fos");
}
catch (Exception e) {
e.printstacktrace();
}
}
并且还在您的AndroidMenifest.xml文件中授予此权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>